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  • Stable carbon and oxygen isotopes in tree rings and basal area increment from mature temperate forests within the AmeriFlux network.
  • Guerrieri, Rossella; University of New Hampshire and Centre for Ecological Research and Forestry Applications, University of Barcelona
    Belmecheri, Soumaya; University of Ariozna
    Jennings, Katie; University of New Hampshire
    Ollinger, Scott V; University of New Hampshire
    Asbjornsen, Heidi; University of New Hampshire
    Xiao, Jingfing; University of New Hampshire
  • 2019-07-13
  • Guerrieri, R., S. Belmecheri, K. Jennings, S.V. Ollinger, H. Asbjornsen, and J. Xiao. 2019. Stable carbon and oxygen isotopes in tree rings and basal area increment from mature temperate forests within the AmeriFlux network. ver 3. Environmental Data Initiative. https://doi.org/DOI_PLACE_HOLDER (Accessed 2024-12-29).

  • Data were used to investigate long-term changes in tree intrinsic water use efficiency (iWUE, i.e., the ratio between CO2 assimilation and stomatal conductance) and the underlying physiological mechanisms. We used d18O to estimate the 18O enrichment in leaf water above the source water, d18OLW. Moreover we assessed the relationship between isotope-derived parameters and atmospheric CO2 (ca) and climate factors. Isotope-related parameters included in the dataset are: a-cellulose d13C, carbon isotope discrimination (d13C), leaf internal CO2 concentration (ci) and the leaf to atmospheric CO2 concentrations (ci/ca), a-cellulose d18O, estimated d18O in precipitation (see Method), oxygen isotope discrimination above the source water (d18O). The dataset includes also the following climate parameters: growing season temperature (Tgrs), precipitation (Pgrs) and vapor pressure deficit (VPDgrs) and mean annual temperature (Ta), precipitation (Ta) and vapor pressure deficit (VPDa), and standard precipitation-evaporation index, SPEI, relative to August, with 3 months lag from the global database. Finally, wealso include the ca values that were used to calculate d13C, iWUE and ci/ca. All the equations used to calculate the isotope-derived parameters, including the leaf water d18O (see Figure 3 in Guerrieri et al. 2019 PNAS) are also provided.

  • Geographic Coordinates
    • N: 44.0646, S: 44.0646, E: -71.288, W: -71.288
    • N: 35.089, S: 35.089, E: -111.76, W: -111.76
    • N: 42.5378, S: 42.5378, E: -72.171, W: -72.171
    • N: 45.2041, S: 45.2041, E: -68.74, W: -68.74
    • N: 39.3232, S: 39.3232, E: -86.413, W: -86.413
    • N: 39.9138, S: 39.9138, E: -74.596, W: -74.596
  • This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.
  • DOI PLACE HOLDER
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